支路电流法是以()为未知量,应用基尔霍夫电流定律和电压定律分别列出所需要的方程组。
A.各元件上电压
B.各支路电流
C.各元件电流
D.各回路中电流
参考答案:B
I have _______ to tell you. Please listen to me. [ ]
A. important something
B. something important
C. important anything
D. anything important
常用的通气模式有()
A.控制通气
B.辅助/控制通气
C.间歇指令通气
D.压力支持通气
E.呼气末正压